Terahertz frequency band local oscillation source based on frequency multiplication link circuit integrated structure

Abstract

The invention provides a terahertz frequency band local oscillation source based on a frequency multiplication link circuit integrated structure. The terahertz frequency band local oscillation source comprises an upper cavity body (1) and a lower cavity body (2); after the surface of the upper cavity body (1) is closely attached to the surface of the lower cavity body (2), an input port (22), a Y-shaped power divider (17), a first preceding-stage frequency doubler (19), a second preceding-stage frequency doubler (20), a Y-shaped combiner (18), a back-stage frequency doubler (21) and an output port (23) are formed. According to the local oscillation source, on the basis of a balanced type frequency doubler circuit, two stages of frequency doubling circuits are integrated into the same cavity body module, the structure is made to be compact, the defect of reflection caused by connection of port surfaces of different modules is overcome, frequency doubling performance is improved, thereby a W-waveband source is converted to the terahertz frequency band through frequency doubling, and larger output power is obtained.

Description

technical field [0001] The invention relates to the technical field of local oscillators, in particular to a local oscillator in the terahertz frequency band based on an integrated structure of frequency multiplication links. Background technique [0002] Terahertz waves are located between microwaves and infrared, and are electromagnetic waves with frequencies in the range of 0.1THz to 10THz. Since the 1920s, people have gradually recognized and carried out research on terahertz technology. After a certain amount of technology accumulation, there has been an upsurge in research and development in the past ten years. In 2004, the U.S. government rated terahertz technology as one of the "Ten Technologies That Will Change the Future World"; the following year, my country also held the "Xiangshan Science and Technology Conference" to formulate a development plan for terahertz technology. At present, universities, enterprises and research institutions in many countries around t...

AI Technical Summary

Problems solved by technology

However, considering that when the frequency exceeds 100GHz, when different modules are fixedly connected, there will be reflections between the port surfaces due to connection problems. Even a small installation error will cause serious standing waves, which will affect the performance of the entire receiver front-end

At the same time, since each frequency multiplier circuit is an independent module, the volume after cascading is also large and inconvenient to use

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